Adds StringHelper with isStringNilOrEmpty method.

iOS/MonsterCards/Helpers/StringHelper.h

@@ -0,0 +1,19 @@
+//
+//  StringHelper.h
+//  MonsterCards
+//
+//  Created by Tom Hicks on 9/5/20.
+//  Copyright © 2020 Tom Hicks. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface StringHelper : NSObject
+
++(BOOL)isStringNilOrEmpty:(NSString*)theString;
+
+@end
+
+NS_ASSUME_NONNULL_END

iOS/MonsterCards/Helpers/StringHelper.m

@@ -0,0 +1,25 @@
+//
+//  StringHelper.m
+//  MonsterCards
+//
+//  Created by Tom Hicks on 9/5/20.
+//  Copyright © 2020 Tom Hicks. All rights reserved.
+//
+
+#import "StringHelper.h"
+
+@implementation StringHelper
+
++(BOOL)isStringNilOrEmpty:(NSString*)theString {
+    if (nil == theString) {
+        return YES;
+    }
+    
+    if (theString.length < 1) {
+        return YES;
+    }
+    
+    return NO;
+}
+
+@end